I agree with most of the recommendations, but if I've disassembled an original vintage freewheel,
then I'll choose a lighter grease.
I would also hesitate using anything besides what the manufacturer recommends if there's a chance
the residue would leech/delaminate any of the new non-c&v composite/carbon-fiber parts, though.
Any cheap, thick automotive wheel bearing grease is obviously way more than capable of handling
the loads on the conventional hubs, bb's and headsets of the c&v bikes we enjoy.
Back in the days of all loose-ball bearings, I would imagine, professional racers, and others that wanted
to squeeze the last bit of performance out of every little detail, including optimizing any aerodynamic
advantage, and the thinnest, lightest tires, would never recommend anything less than the thinnest
grease they could get away with, to minimize any potential frictional drag.
I would think, for instance, they wouldn't have cared if most the thin grease may get hot and slowly
leech out of their hubs during a high-speed descent, because their bikes routinely had much more
attention, and usually by a hired mechanic.
After a race, they could be assured that whatever may be left of the thin grease they used would be
routinely cleaned out, the bearing balls replaced and races thoroughly inspected for any developing
flaw, as well as a meticulous, comprehensive inspection of every other part of their bikes.
I’d be interested to find out what professionals, like TDF mechanics actually did, and what their reasons
were, 25+ years ago, and how it differed from the bikes they might have overhauled for their families.